I definitely understand your view on crypto, and I hate to be an apologist, but here's a view you may not have considered:
I think mainstream society has gotten far too comfortable with the lack of privacy in our everyday lives, and this extends to finance. A company has no business tracking the data about my purchases, let alone selling it. The government doesn't need to know everything I spend money on either.
As with most topics relating to privacy, it's not that I worry about what I have to hide. I worry about your intention with that information. As one example, if I were needing to buy Plan B for an emergency contraceptive, there is a not insignificant portion of our government and the general population that frowns on that, and could paint me as a target in the future if it was known.